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#include "FileSystemPath.h"
#include "StringBuilder.h"
#include "Vector.h"
#include "kstdio.h"
namespace AK {
FileSystemPath::FileSystemPath(const StringView& s)
: m_string(s)
{
canonicalize();
m_is_valid = true;
}
void FileSystemPath::canonicalize()
{
if (m_string.is_empty()) {
m_parts.clear();
return;
}
bool is_absolute_path = m_string[0] == '/';
auto parts = m_string.split_view('/');
if (!is_absolute_path)
parts.prepend(".");
int approximate_canonical_length = 0;
Vector<String> canonical_parts;
for (int i = 0; i < parts.size(); ++i) {
auto& part = parts[i];
if (is_absolute_path || i != 0) {
if (part == ".")
continue;
}
if (part == "..") {
if (!canonical_parts.is_empty())
canonical_parts.take_last();
continue;
}
if (!part.is_empty()) {
approximate_canonical_length += part.length() + 1;
canonical_parts.append(part);
}
}
if (canonical_parts.is_empty()) {
m_string = m_basename = "/";
return;
}
m_basename = canonical_parts.last();
auto name_parts = m_basename.split('.');
m_title = name_parts[0];
if (name_parts.size() > 1)
m_extension = name_parts[1];
StringBuilder builder(approximate_canonical_length);
for (int i = 0; i < canonical_parts.size(); ++i) {
auto& canonical_part = canonical_parts[i];
if (is_absolute_path || i != 0)
builder.append('/');
builder.append(canonical_part);
}
m_parts = move(canonical_parts);
m_string = builder.to_string();
}
bool FileSystemPath::has_extension(StringView extension) const
{
// FIXME: This is inefficient, expand StringView with enough functionality that we don't need to copy strings here.
String extension_string = extension;
return m_string.to_lowercase().ends_with(extension_string.to_lowercase());
}
String canonicalized_path(const StringView& path)
{
return FileSystemPath(path).string();
}
}
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